Hymenopsis typhae  

Anamorph: conidiomata stromatic, erumpent through host tissues and becoming acervular, 250-450 µm diam., ± elongate parallel to the substratum substructure when on Typha; dark greenish black, ± flat but sometimes with an apparently thickened margin caused by compression when breaking through the substratum surface. Conidiophores formed in a palisade, developing from a basal layer of greenish brown angular cells, the lateral wall not well-differentiated; 11-15 x 2-2.5 µm [to 25 x 2.5-3 µm fide Sutton 1980), ± cylindrical, hyaline to pale green, proliferating once or twice percurrently with a minute collarette often visible. Conidia 14.5-16.5 x 2.2-2.7 µm, irregularly fusiform to fusiform-cylindrical, the apex acute and the base ± truncate with a scar ca 1 µm diam., aseptate, dark green to grren-olivaceous, fairly thin-walled, smooth, sometimes (not in the material examined) with an amorphous gelatinous appendage at one or both ends.
Teleomorph: not known.